PatchTheCVECVE-2026-107406: Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler
CVE-2026-107406 is a critical-severity flaw (CVSS 9.5) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: * For the following versions: Applicable only when configured as a SAML IdP: * NetScaler ADC and NetScaler Gateway between 14.1-73.37 and 14.1-73.41, inclusive * NetScaler ADC 14.1-
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.5 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.9% (top 21%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| Published | 2026-10-08 |
| Last modified | 2026-10-10 |
Last updated 2026-10-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
Advisories and coverage
Research and news
- Zscaler ThreatLabz: CVE-2026-88771: Inside the Exploitation of a Critical NetScaler RCE Vulnerability 2026-10-16
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-107406?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-107406 being exploited?
CVE-2026-107406 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-107406 affect?
CVE-2026-107406 affects affected software. Severity is critical (CVSS 9.5). Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific
How urgent is CVE-2026-107406?
Priority 58/100. Critical severity; Remotely exploitable, no login, no user action